Courtney, welcome to the group! With a lot of elbow grease, I'm sure your camper will give you many years of camping pleasure. The places that will leak will be around windows
and roof hatches, and sometimes through the wall rivets themselves. Many people clean off the outside, taking care to get all of the old caulk off the rivets, then re-caulk and glue caps over the rivet heads. Just don't use silicone. It has a high rate of failure, and leaves a nasty residue behind.